Оценка технологических возможностей различных схем механической обработки

Abstract

Показана эффективность применения схем торцового шлифования и фрезерования, при которых тепловой поток направлен в снимаемый слой материала, что существенно уменьшает тепловое воздействие на обрабатываемую поверхность. Расчетами установлено, что по уровню производительности обработки схемы шлифования периферией и торцом круга, а также схемы фрезерования торцовой фрезой, примерно одинаковые. Это позволяет эффективно использовать схемы торцового шлифования и фрезерования для повышения качества обработки.

The paper shows that an important condition for improving the quality of machining of machine parts is the use of face grinding and milling schemes, in which the heat flow is directed into the removed layer of material and thereby significantly reduces the thermal effect on the surface being treated, especially with increased depths of cutting. Calculations established that the level of grinding performance by the periphery and the end of the circle, as well as the milling scheme by the face milling cutter, is approximately the same in terms of the processing performance level, taking into account the tool wear limitation. This makes it possible to effectively use grinding schemes for the end of the circle and milling with the face milling cutter both in preliminary and final operations in order to improve the quality of the surfaces to be treated and to avoid the formation of temperature and other defects on them. It has also been established that the processes of turning and planing are, according to the physical nature, subject to the regularities of face machining. This helps to reduce the thermal impact on the surface being treated, since the heat flow is directed mainly to the layer of the material being removed. The efficiency of the high-speed milling scheme for high-speed CNC machine-tools with machining center type is shown when machining the grooves of holes, planes and other complex surfaces of high-precision forming equipment for pasta and confectionery industries.